/* Copyright (C) 2008  Romolo Camplani, Marco Fortunato, Marco Marelli, Guido Rota, Fabio A. Schreiber et al.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.dei.perla.parser.expressions;

/**
 * Nodo d'Aggregazione basata sui samples
 *
 */
public class NodeAggregationSamplesBased extends NodeAggregation {
	
	/**
	 * Numero di samples dell'aggregazione
	 */
	private int samples;
	
	public NodeAggregationSamplesBased(Integer samples, AggregationType aggregationTypes, Node expressionToAggregate) {
		super(aggregationTypes, expressionToAggregate);
		
		this.samples = samples;
	}
	
	public NodeAggregationSamplesBased(Integer samples, AggregationType aggregationTypes, Node expressionToAggregate, Node filterExpression) {
		super(aggregationTypes, expressionToAggregate, filterExpression);
		
		this.samples = samples;
	}

	public int getSamples() {
		return samples;
	}
	
	public String toString()
	{
		String s = this.getAggregationType().toString() + "(";
		
		if(this.getAggregationType() == AggregationType.COUNT)
			s += "*";
		else
			s += this.getExpressionToAggregate().toString();
		
		s += ", " + Integer.toString(samples);
		
		if(this.getFilterExpression() != null)
		{
			s += ", " + this.getFilterExpression().toString();
		}
		
		s += ")";
		
		return s;
	}
}
